using CAF.Infrastructure.Core.Data;
using CAF.Infrastructure.Core.Events;
using CAF.Infrastructure.Core.Domain.Cms.Media;
//using CAF.Infrastructure.Core.Domain.Shop.Catalog;
//using CAF.Infrastructure.Core.Domain.Shop.Orders;
//using CAF.Infrastructure.Core.Domain.Shop.Payments;
using System;
using System.Linq;


namespace CAF.WebSite.Application.Services.Media
{
    /// <summary>
    /// Download service
    /// </summary>
    public partial class DownloadService : IDownloadService
    {
        #region Fields

        private readonly IRepository<Download> _downloadRepository;
        private readonly IEventPublisher _eventPubisher;

        #endregion

        #region Ctor

        /// <summary>
        /// Ctor
        /// </summary>
        /// <param name="downloadRepository">Download repository</param>
        /// <param name="eventPubisher"></param>
        public DownloadService(IRepository<Download> downloadRepository,
            IEventPublisher eventPubisher)
        {
            _downloadRepository = downloadRepository;
            _eventPubisher = eventPubisher;
        }

        #endregion

        #region Methods

        /// <summary>
        /// Gets a download
        /// </summary>
        /// <param name="downloadId">Download identifier</param>
        /// <returns>Download</returns>
        public virtual Download GetDownloadById(int downloadId)
        {
            if (downloadId == 0)
                return null;
            
            var download = _downloadRepository.GetById(downloadId);
            return download;
        }

        /// <summary>
        /// Gets a download by GUID
        /// </summary>
        /// <param name="downloadGuid">Download GUID</param>
        /// <returns>Download</returns>
        public virtual Download GetDownloadByGuid(Guid downloadGuid)
        {
            if (downloadGuid == Guid.Empty)
                return null;

            var query = from o in _downloadRepository.Table
                        where o.DownloadGuid == downloadGuid
                        select o;
            var order = query.FirstOrDefault();
            return order;
        }

        /// <summary>
        /// Deletes a download
        /// </summary>
        /// <param name="download">Download</param>
        public virtual void DeleteDownload(Download download)
        {
            if (download == null)
                throw new ArgumentNullException("download");

            _downloadRepository.Delete(download);

            _eventPubisher.EntityDeleted(download);
        }

        /// <summary>
        /// Inserts a download
        /// </summary>
        /// <param name="download">Download</param>
        public virtual void InsertDownload(Download download)
        {
            if (download == null)
                throw new ArgumentNullException("download");

            _downloadRepository.Insert(download);

            _eventPubisher.EntityInserted(download);
        }

        /// <summary>
        /// Updates the download
        /// </summary>
        /// <param name="download">Download</param>
        public virtual void UpdateDownload(Download download)
        {
            if (download == null)
                throw new ArgumentNullException("download");

            _downloadRepository.Update(download);

            _eventPubisher.EntityUpdated(download);
        }

        /// <summary>
        /// Gets a value indicating whether download is allowed
        /// </summary>
        /// <param name="orderItem">Order item to check</param>
        /// <returns>True if download is allowed; otherwise, false.</returns>
        //public virtual bool IsDownloadAllowed(OrderItem orderItem)
        //{
        //    if (orderItem == null)
        //        return false;

        //    var order = orderItem.Order;
        //    if (order == null || order.Deleted)
        //        return false;

        //    //order status
        //    if (order.OrderStatus == OrderStatus.Cancelled)
        //        return false;

        //    var product = orderItem.Product;
        //    if (product == null || !product.IsDownload)
        //        return false;

        //    //payment status
        //    switch (product.DownloadActivationType)
        //    {
        //        case DownloadActivationType.WhenOrderIsPaid:
        //            {
        //                if (order.PaymentStatus == PaymentStatus.Paid && order.PaidDateUtc.HasValue)
        //                {
        //                    //expiration date
        //                    if (product.DownloadExpirationDays.HasValue)
        //                    {
        //                        if (order.PaidDateUtc.Value.AddDays(product.DownloadExpirationDays.Value) > DateTime.UtcNow)
        //                        {
        //                            return true;
        //                        }
        //                    }
        //                    else
        //                    {
        //                        return true;
        //                    }
        //                }
        //            }
        //            break;
        //        case DownloadActivationType.Manually:
        //            {
        //                if (orderItem.IsDownloadActivated)
        //                {
        //                    //expiration date
        //                    if (product.DownloadExpirationDays.HasValue)
        //                    {
        //                        if (order.CreatedOnUtc.AddDays(product.DownloadExpirationDays.Value) > DateTime.UtcNow)
        //                        {
        //                            return true;
        //                        }
        //                    }
        //                    else
        //                    {
        //                        return true;
        //                    }
        //                }
        //            }
        //            break;
        //        default:
        //            break;
        //    }

        //    return false;
        //}

        ///// <summary>
        ///// Gets a value indicating whether license download is allowed
        ///// </summary>
        ///// <param name="orderItem">Order item to check</param>
        ///// <returns>True if license download is allowed; otherwise, false.</returns>
        //public virtual bool IsLicenseDownloadAllowed(OrderItem orderItem)
        //{
        //    if (orderItem == null)
        //        return false;

        //    return IsDownloadAllowed(orderItem) &&
        //        orderItem.LicenseDownloadId.HasValue &&
        //        orderItem.LicenseDownloadId > 0;
        //}

        #endregion
    }
}
